Tube-number record
Z 661 W
0 archive entries
Z 661 W is a tube type in the TubeDatabase archive (class: Cold Cathode Relay Tube). Recorded specifications: brand VEB Werk für Fernsehelektronik Berlin, construction Other / special, socket Flexible / flying leads, and maximum plate voltage 350 V. The archive does not yet hold a photographed example of this type.
BrandVEB Werk für Fernsehelektronik Berlin
ClassCold Cathode Relay Tube
BaseFlexible / flying leads
Construction
Primary TypeOther / special
EnvelopeSubminiature
Sections1
Filament / Heater
Absolute Maximum Ratings
Plate Voltage350 V
Grid 1 Voltage100 V
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| AC / Half-wave operation | 220 V | — | — | — | 6 mA |
Application Notes
Used in relay and counting circuits. Auxiliary electrode (h) can be connected via 10 MOhm resistor for faster build-up or higher stability.
Datasheets
Datasheet: Z661W.pdf
Download PDFLoading datasheet...
Datasheets courtesy of Frank Philipse via Frank's Electron Tube Data Sheets.
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